Wholesale: Products & Services

Product Catalog (PCAT)

Local Number Portability (LNP) Query Service - V9.0

Product Description

Local Number Portability Query Service utilizes the Common Channel Signaling
Network (CCSN) to query a Local Number
Portability (LNP) database to secure network routing instructions before the
completion of a call. At a minimum, the LNP database contains Location Routing
Number (LRN) information about an end-user's choice of Local Service Provider
(LSP). The LRN is unique to the LSPs serving switch that will complete the
call.

LNP is defined as, "the ability of users of telecommunications services to
retain, at the same location, existing Telephone Numbers (TNs) without impairment
of quality, reliability, or convenience when switching from one telecommunication
carrier to another." For additional information, view Local Number Portability (LNP).

When more than one network is involved in completing a call, the network prior
to the termination (i.e. N-1 Network) is responsible for querying a LNP database to
secure the appropriate LRN to route the call. There are three features of Local
Number Portability Query Service:

LNP End Office Default Database Query Service

When the provider of the N-1 network forwards a non-queried call to a
CenturyLink™ end office switch and the TN is a ported number,
CenturyLink's switch will suspend the call processing and launch a query to
CenturyLink's LNP database. The LNP database will secure the LRN of the ported
number. Once the LRN is returned from the LNP database to the CenturyLink
switch originating the query, call processing is resumed. The call is either
processed in CenturyLink's network, or routed to the appropriate LSP network to
complete the call. CenturyLink will bill the N-1 LSP a Local Number Portability
Query Service Default End Office query charge.

LNP Tandem Default Database Query Service<

When CenturyLink's tandem is the first point of switching for terminating a
non queried call to an NXX Code with one or more ported numbers, the following
will take place:

The tandem switch will suspend the call processing, launch a query to the
LNP database to determine if the called TN is ported. If the number has been
ported, the LRN is secured.

The call is either processed in CenturyLink's network, or routed to the
appropriate LSP network to complete the call

CenturyLink will bill the N-1 provider a Local Number Portability Query
Service Default End Office query charge.

LNP Direct Database Query Service

When you wish to fulfill your querying responsibility yourself, and are
Signaling System 7 (SS7) capable, but don't wish to invest in your own LNP
database, you may interconnect with CenturyLink's SS7 network at the Local
Signal Transfer Point (LSTP), and launch queries to CenturyLink's LNP
databases. CenturyLink will bill you the query charge.

Pricing

Rate Structure

The rate elements associated with this service are Database per Query rates.
Direct Database Query Services will also include Optional Activation Charges. The
current pricing, including non-recurring ordering charges for product Local Number
Portability Query Service can be found in CenturyLink Operating Companies Tariff F.C.C. No. 11.

Rates

CenturyLink Local Number Portability Query Service rates are as follows:

Ordering

LNP Database Query Service

The CenturyLink LNP Database Query Service Product and/or Options Activation is
ordered by completing an Access Service Request (ASR) and following the Access Service Request Forms guidelines. Upon
completion of the ASR, submit it to your CenturyLink Service Manager.

One ASR per link set is required per LATA per CSL. The Network Signaling
Management Center (NSMC) then translates the point code(s) to all link sets in the
LATA based on one service request. An ASR is not required per Two Six Code (TSC).
Multiple point codes can be activated on a single ASR, but all of the point codes
activated must be associated with the same CSL.